Table 1 Study definition of urinary tract infections (UTIs)
To be diagnosed of UTI, an eligible subject must meet both criterion 1 and criterion 2 | |
|---|---|
Criterion 1 | Having a positive urine culture ≥ 105 cfu/mL, with no more than two species of microorganism |
Criterion 2 | At least one of the following |
ICD-9 code of signs and symptoms of UTIs | |
Dipstick test positive for leukocyte esterase and/or nitrate | |
Pyuria (≥ 10 white blood cells (wbc)/mm3 or ≥ 3 wbc/high power field of unspun urine) | |
Physician diagnosis of a urinary tract infection (ICD-9 code) | |
599.0 Urinary tract infection, site not specified | |
590.x Infection of kidney | |
595.0 Acute cystitis | |
597.x Urethritis, not sexually transmitted diseases | |